摘要
We investigate the quantum interference of spin wave excitations of a spin-1 atomic Bose condensate confined in an optical lattice. Single-channel and dual-channel interactions are employed in our system, and their induced excitations are compared. Also we consider the interplay of magneto-optical excitations, which leads to a constructive or destructive effect for the creation of magnons based on background excitations. The population distributions of excited magnons can be well controlled by steering the long-range dipole-dipole interactions. Such a scheme can be used to demonstrate conventional quantum-optical phenomena like dynamical Casimir effect at finite temperatures.
基金
Supported by the National Basic Research Program of China (973 Program) under Grant No. 2011CB921604
the National Natural Science Foundation of China under Grant Nos. 11004057, 10828408
Educational Commission of Henan Province of China under Grant No. 01026631082
the “Chen Guang” Project Supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation under Grant No.10CG24
